RKO meaning in Sports ?

Randal Keith Orton (born April 1, 1980), is an American professional wrestler and actor. He is currently signed to WWE, where he performs on the Raw brand as one half of the Raw Tag Team Champions with Riddle in their first reign.

Orton is a third-generation professional wrestler; his grandfather Bob Orton, father Bob Orton Jr., and uncle Barry Orton were all wrestlers. Before being signed by the World Wrestling Federation (WWF, now WWE), he trained in and wrestled for the Mid-Missouri Wrestling Association and Southern Illinois Conference Wrestling. He was then signed by the WWF and was sent to Ohio Valley Wrestling (OVW), where he held the OVW Hardcore Championship twice. He became a member of the stable Evolution shortly after his WWE debut, which quickly led to an Intercontinental Championship reign, his first championship with the company. He also acquired the moniker "The Legend Killer" during a storyline where he began disrespecting and then physically attacking WWE Hall of Famers and wrestling veterans. At age 24, he became the youngest world champion in WWE history after he won the World Heavyweight Championship. With this win, he departed from Evolution and a feud with his former stablemates began. In 2006, Orton joined forces with Edge in a tag team known as Rated-RKO. Together, they held the World Tag Team Championship. After Rated-RKO disbanded in mid-2007, Orton gained two WWE Championship reigns in one night, becoming the second youngest two-time WWE Champion at the age of 27. He formed the group The Legacy with Cody Rhodes and Ted DiBiase Jr. in 2008. They disbanded in 2010, and Orton returned to singles competition. From 2013 to 2015, he was aligned with The Authority, who named him the "face of the WWE". In 2016, he joined The Wyatt Family, winning the SmackDown Tag Team Championship with Bray Wyatt and Luke Harper before turning on them in 2017. He won his first United States Championship in 2018, becoming the 18th overall Grand Slam Champion after already having been the 17th Triple Crown Champion.

Orton is regarded as one of the greatest professional wrestlers of all time. Orton's rivalry with fellow wrestler John Cena has been recognized as one of the longest and grestest rivalries in WWE history. Orton has held the WWE Championship 10 times and WWE's World Heavyweight Championship four times. He was the final holder of the World Heavyweight Championship, which he unified with the WWE Championship to become the WWE World Heavyweight Champion at TLC: Tables, Ladders & Chairs in 2013. Orton is recognized by WWE as having the third-most world championship victories in history at 14, behind John Cena and Ric Flair (both 16) and tied with Triple H (also at 14). He is the winner of the 2013 Money in the Bank ladder match, as well as the 2009 and 2017 Royal Rumble matches, and has headlined multiple WWE pay-per-view events, including WrestleMania 25 and WrestleMania XXX.